New foldable box and assembling and disassembling method thereof

ABSTRACT

Disclosed are a new foldable box and an assembling and disassembling method thereof. The box includes a first plate ( 1 ), a second plate ( 2 ) and two side plates ( 3 ). The two side plates are respectively hinged with the second plate. Sliding guiding holes are provided on the first plate. The two side plates are respectively fixedly connected or movably connected with a sliding member. The two sliding members ( 4 ) are respectively slidably provided in the sliding guiding holes, such that the two side plates respectively slide toward each other along the sliding guiding holes to achieve folding or slide away from each other along the sliding guiding holes to achieve unfolding. The foldable box is simple in structure and convenient for assembling, reducing the space occupied thereby.

CROSS REFERENCE TO RELATED APPLICATIONS

This is a continuation-in-part of International Patent Application No. PCT/CN2017/081194 filed Apr. 20, 2017, which claims priority to China Patent Application No. 201610602633.9 filed Jul. 27, 2016. Priority is also claimed to China Patent Application No. 201821613505.5 filed Sep. 30, 2018. The contents of the foregoing patent applications are incorporated by reference herein in their entirety.

TECHNICAL FIELD

The present invention relates to the technical field of boxes, and more particularly to a new foldable box and an assembling and disassembling method thereof.

BACKGROUND

In order to reduce the transportation cost, most of the existing boxes are disassembled and transported as separate plates, and then assembled after the transportation is completed. However, the box of such a structure has many components and the assembly method is complicated, and the assembler needs to make assembly according to the operation method in the instructions, which takes a long time. Some of the boxes may also have the problem that it is difficult to disassemble after assembly. In order to improve the assembly efficiency, foldable boxes appear on the market. For example, in one of the foldable boxes, side plates are respectively hinged with a front plate and a rear plate to form a frame, and the middle of the side plate is foldable to shorten the distance between the front plate and the back plate, thereby reducing the occupied volume of the box. However, the foldable box has the defects of many connectors and complicated structure. Therefore, there is a great room for improvement in the foldable box.

SUMMARY

In order to overcome the shortcomings and deficiencies in the prior art, an object of the present invention is to provide a new foldable box that can realize folding, has a simple structure, reduce space occupation, facilitate storage, transportation and movement, effectively improve assembly efficiency, and can be assembled conveniently. Another object of the present invention is to provide an assembling and disassembling method for a new foldable box, which is simple in operation, saves human resources, and improves assembly and disassembly efficiency.

In order to achieve the above objects, the present invention is achieved by the following technical solutions: a new foldable box, comprising: a first plate, a second plate and two side plates; wherein the two side plates are respectively hinged to the second plate; the first plate is provided with a sliding guiding portion along a length direction of the first plate; the two side plates are respectively fixedly connected or movably connected with a sliding member; the two sliding members are respectively slidably connected with the sliding guiding portion, so that the two side plates respectively slide toward each other along the sliding guiding portion to realize folding or slide away from each other along the sliding guiding portion to realize unfolding.

The foldable box in this embodiment can be folded, the structure is simple, the occupied space is reduced, the package volume is reduced, the storage, transportation and movement are convenient, and the impact resistance can also be improved. Unfolding and assembling are carried out when needed. The unfolding and assembling method is: pulling the first plate and/or the second plate outward; during the process of moving the first plate and/or the second plate outward, the distance between the first plate and the second plate is increased, the two sliding members respectively slide outward along the sliding guiding hole, and the two side plates respectively rotate outward around a hinge with the second plate to form a frame for unfolding. Since the heights of the first plate, the second plate and the two side plates are relatively fixed, the positioning time during assembly can be saved, and a large number of connectors are not required for assembly, which can effectively improve assembly efficiency and make the user complete box assembling in short time and can be used to improve the ease of assembly. The foldable box can also be folded again when not in use.

Preferably, the first plate is provided with a sliding guiding portion along a length direction of the first plate in one of the following two ways:

a. the first plate comprises a first plate body, a sliding positioning structure connected to a top end and/or a bottom end of the first plate body, and side bars connected at two ends of the first plate body; the sliding guiding portion refers to a sliding guiding hole opened on the sliding positioning structure and extending along the length direction of the first plate; the two sliding members are respectively slidably disposed in the sliding guiding hole; the side bars at the two ends are located on one side of the first plate body adjacent to the second plate to form a positioning space, so that during folding, the two side plates are simultaneously accommodated in the positioning space to position the first plate;

b. the first plate comprises a first plate body, an upper side bar connected to a top end of the first plate body, a lower side bar connected to a bottom end of the first plate body and first side bars connected at two ends of the first plate body; the sliding guiding portion refers to a sliding positioning bar; the sliding positioning bar is connected to one or more of below the upper side bar, above the lower side bar, and one of the first plate body adjacent to the second plate; the sliding positioning bar is opened with a. sliding guiding hole along a length direction; the two side plates are respectively hingedly connected with the second plate; the two side plates are respectively fixedly connected or movably connected with a sliding member; the two sliding members are respectively slidably disposed in the sliding guiding holes, so that two side plates respectively slide toward each other along the sliding guiding holes to realize folding or slide away from each other along the sliding guiding holes to realize unfolding.

When the two side plates slide to the positioning space, the left and right movement positions of the first plate are restricted by the two side plates, which simplifies the structure and is convenient for the user. In the second way, the sliding positioning bar is covered to prevent dust from entering the inside of the box from the sliding guiding hole, and has good dustproof effect; the sliding member and the sliding guiding hole are blocked to make the outer surface of the box flat, so that an article can be placed on the top and the sliding member is avoided from protruding outwards to scratch the ground or damage other items, making the box flat and beautiful; and the sliding positioning bar can strengthen the mechanical strength of the first plate, thereby improving the overall mechanical strength of the box, which is beneficial to improve the bearing capacity of the box.

Preferably, in the second way, the slide positioning bar refers to a flat sliding positioning bar or a U-shaped sliding positioning bar or a reverse sliding positioning bar.

Preferably, in the second way, mounting operation mouths are provided on the upper side bar and/or the lower side bar at positions opposite to two ends of the sliding guiding hole. When the sliding member is a connector such as a screw or a bolt, the mounting operation mouth allows a user to directly view the sliding member and facilitate the locking or loosening of the sliding member.

Preferably, in the second way, the sliding positioning bar and the first plate are separately disposed, and the fixed connection is achieved by welding or riveting or screwing, or the sliding positioning bar is integrally formed with the first plate. When the sliding positioning bar and the first plate are separately arranged, the sliding positioning bar can be different from the first plate by different materials and different thicknesses; and in order to enhance the mechanical strength, when the material is thickened, the first plate does not need to be thickened at the same time, which can reduce the cost.

Preferably, the two sliding members are respectively provided with a fastening structure for fixing between the side plates and the first plate. The first plate, the second plate and the two side plates can also form a fixed frame without installing or not yet installing a bottom plate, a top plate, a laminate and a longitudinal partition. On the one hand, the positioning and assembly are facilitated, and the mechanical strength of the foldable box is improved. On the other hand, any one or two or more of a bottom plate, a top plate, a laminate and a longitudinal partition can be flexibly selected according to actual needs, even if the bottom plate, the top plate, the laminate and the longitudinal partition are not installed at all, the frame-type box can be formed to meet various user needs.

Preferably, the fastening structure refers to a thread provided on the sliding member; the side first plates provided with a threaded portion, or the side plate comprises a side plate body and a sliding piece connected to the side plate body, and the sliding piece is provided with a threaded portion; one end of the sliding member is threaded to the threaded portion, and the other end of the sliding member passes through the sliding guiding hole to abut the first plate to realize fixing between the side plate and the first plate. The advantage of this design is that the ease of assembly and disassembly can be further improved, and the first plate and the side plate can be firmly fixed.

The sliding positioning structure is configured in one of two ways:

a. each sliding positioning structure includes a sliding positioning bar; the sliding guiding hole refers to a sliding guiding hole opened on the sliding positioning bar; one end of the sliding member is connected with the side plate, and the other end of the sliding member passes through the sliding guiding hole to realize that the sliding member is slidably disposed in the sliding guiding hole; and

b. the sliding positioning structure comprises at least two sliding positioning bars arranged on the upper and lower sides and parallel to each other; the sliding guiding holes refer to sliding guiding holes opened on the respective sliding positioning bars and parallel to each other; one end of the sliding member is connected to the side plate, and the other end of the sliding member sequentially passes through all the sliding guiding holes to realize that the sliding member is slidably disposed in the sliding guiding hole. In the second solution, the sliding member can pass through all the sliding guiding holes at the same time to keep the sliding member in a vertical state, which facilitates the smooth sliding of the sliding member, and also facilitates the fixing between the side plate and the plate, thereby further improving the folding. The mechanical strength of the cabinet.

Preferably, the sliding guiding hole is provided with an inwardly protruding limiting protrusion on a hall wall to realize the position limiting of the sliding member. The limiting protrusion can restrict the movement of the sliding member, further improving the convenience of assembly and the safety of use.

Preferably, one side of the two side plates are respectively attached to the first plate, and the other side of the two side plates are respectively attached to the second plate to realize the assembly of the first plate, the second plate and the two side plates into a frame.

Preferably, one side of the two side plates being respectively attached to the first plate refers to that the two side plates each comprises a side plate body and a reinforcing edge, the reinforcing edge has an L-shaped cross section; and the reinforcing edge is disposed on a side of the side plate body adjacent to the side bar, and is attached to the side bar. The reinforcing edge is L-shaped, which can strengthen the mechanical strength of the side plates, and can also limit the first plate and vice versa when the box is unfolded to prevent the side plates from being deformed outward.

Preferably, the second plate comprises a second plate body and second side bars connected to the two ends of the second plate body; the second side bars at the two ends are located on one side of the second plate body adjacent to the first plate, so that the second side bars at the two ends are respectively attached to the first plate, and a spacing exists between the first plate and the second plate body; the other sides of the two side plates are respectively attached to the second plate, and the other sides of the two side plates are respectively attached to the side bars at the two ends. The accommodation spacing can be used to place other parts of the box, so that the foldable box can be folded and packaged.

A method for assembling and disassembling a new foldable box, comprising: an assembling method and a disassembling method; wherein the assembling method comprises the following steps:

in step A1, laying the box in a folded state flat; pulling one of a first plate and a second plate upward, the other keeping stationary under the action of gravity, and the two side plates respectively rotating outward around a hinge with the second plate to accommodate the increasing distance between the first plate and the second plate until both side plates are unfolded and form a frame together with the first plate and the second plate; during the outward rotation of the two side plates, two sliding members respectively connected to the two side plates sliding away from each other along a sliding guiding portion opened on the first plate to limit rotation angles of the two side plates and realize the positioning of the first plate;

in step A2, fixing the frame and completing assembly;

the disassembling method includes the following steps:

in step B1, de-fixing the frame;

in step B2, the two side plates respectively rotating inwardly around the hinge with the second plate until the two side plates are both overlapped with the first plate; in the process of the two side plates rotating inwardly respectively, the two sliding members respectively sliding toward each other along the sliding guiding portion, and the first plate and/or the second plate moving inwardly to reduce the distance between the first plate and the second plate.

The assembling and disassembling method in the present invention is simple in operation, and a worker can perform assembly or disassembly quickly by a single operation, which can save human resources and improve assembly and disassembly efficiency.

Preferably, in the step A2, fixing the frame means adopting one of the following three ways:

a. realizing positioning and fixing between the two side plates and the first plate by two sliding members respectively, so that the frame is fixed;

b. mounting one or more of a top plate, a bottom plate, a laminate and a longitudinal partition on the frame, so that the distance between the first plate and the second plate and the distance between the two side plates are fixed, thereby fixing the frame; and

c. realizing positioning and fixing between the two side plates and the first plate by two sliding members respectively, so that the frame is fixed, and mounting any one or two or more of a top plate, a bottom plate, a laminate plate and a longitudinal partition on the frame to strengthen the frame.

All the above three ways can effectively achieve frame fixing; the first method can meet the user's needs for the use of the frame-type box, simplify the structure, and at the same time ensure the good mechanical strength of the foldable box. The third method can flexibly select one or two or more of a bottom plate, a top plate, a laminate and a longitudinal partition to meet various user needs; and after fixing the frame, the installation of the top plate, the bottom plate, the laminate and the longitudinal partition helps to reduce the assembly difficulty and improve the product quality.

Compared with the prior art, the present invention has the following advantages and benefits:

1. The foldable box in the present invention can be folded, the structure is simple, the occupied space is reduced, the package volume is reduced, the storage, transportation and movement are convenient, and the impact resistance can also be improved. The assembly efficiency can be effectively improved and users can complete box assembling in a short time. The ease of assembly is improved;

2. The foldable box of the present invention can prevent dust from entering the inside of the box from the sliding guiding hole, and has good dustproof effect; it is beneficial to improve the surface leveling degree, and is convenient for placing articles on the top and can prevent the sliding member from protruding outward to scratch the ground or damage other items, making the box flat and beautiful; it has good mechanical strength and bearing capacity;

3. The sliding guiding groove of the foldable box in the present invention can be independently arranged with the first plate or integrally formed with the first plate; when the sliding guiding groove and the first plate are separately arranged, different materials and different thicknesses from the first plate can be selected; and in order to enhance the mechanical strength, when the material is thickened, the first plate does not need to be thickened at the same time, which can reduce the cost;

4. In the foldable box according to the present invention, the first plate, the second plate and the two side plates can also form a fixed frame without installing or not yet installing a bottom plate, a top plate, a laminate and a longitudinal partition. On the one hand, the positioning and assembly are facilitated, and the mechanical strength of the foldable box is improved. On the other hand, any one or two or more of a bottom plate, a top plate, a laminate and a longitudinal partition can be flexibly selected according to actual needs, even if the bottom plate, the top plate, the laminate and the longitudinal partition are not installed at all, the frame-type box can be formed to meet various user needs;

5. In the foldable box according to the present invention, the left and right movement positions of the first plate are restricted by the two side plates, which simplifies the structure and is convenient for the user;

6. The side plate of the foldable box of the present invention has good mechanical strength, and the side plate will not deform even if being pulled by an external force when the box is unfolded; and

7. The assembling and disassembling method in the present invention is simple in operation, and a worker can perform assembly or disassembly quickly by a single operation, which can save human resources and improve assembly and disassembly efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing the structure of a foldable box according to the present invention in an unfolded state;

FIG. 2 is a schematic structural view of a foldable box according to the present invention in a folded state;

FIG. 3 is a schematic view showing the structure of a foldable box according to the present invention;

FIG. 4 is a schematic view showing the structure of a foldable box according to a second embodiment;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

FIG. 6 is an exploded view of a foldable box according to the second embodiment;

FIG. 7 is an exploded view of a foldable box according to a fifth embodiment;

FIG. 8 is an enlarged view of a portion B of FIG. 7;

FIG. 9 is a schematic structural view of a side plate of the foldable box according to the fifth embodiment;

FIG. 10 is an enlarged view of a portion C in FIG. 9;

FIG. 11 is a schematic structural view showing an unfolded state of the foldable box according to the fifth embodiment;

FIG. 12 is an enlarged view of a portion D in FIG. 11;

FIG. 13 is a schematic structural view of the foldable box according to the fifth embodiment;

FIG. 14 is a schematic structural view showing a folded state of the foldable box according to the fifth embodiment;

FIG. 15 is a schematic view showing the foldable box being folded and a top plate, a bottom plate and a partition plate being placed therein according to the fifth embodiment;

1 first plate, 11 first plate body, 12 first side bar, 13 sliding positioning bar, 131 guiding portion, 132 first mounting portion, 133 second mounting portion, 134 sliding guiding hole, 135 limiting protrusion, 14 upper side bar, 15 lower side bar, 2 second plate, 21 second plate body, 22 second side bar, 3 side plate, 31 sliding piece, 32 side plate body, 33 reinforcing edge and 4 sliding member.

DETAILED DESCRIPTION

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

Embodiment 1

The foldable box in this embodiment has the structure as shown in FIG. 1 to FIG. 3; and comprises a first plate 1, a second plate 2 and two side plates 3. The first plate 1 includes a first plate body 11, a sliding positioning structure connected to a top end of the first plate body 11, and side bars 12 connected to two ends of the first plate body 11. The sliding positioning structure includes a sliding positioning bar 13. The sliding positioning bar 13 is provided with a sliding guiding portion along a length direction of the first plate. Specifically, the sliding guiding portion is a sliding guiding hole. The sliding positioning bar 13 and the first side bars 12 at the two ends are located on one side of the first plate body 11 adjacent to the second plate 2 to form a positioning space. The second plate 2 includes a second plate body 21 and second side bars 22 connected to two ends of the second plate body 21. The second side bars 22 at the two ends are located on one side of the second plate body 21 adjacent to the first plate 1.

During unfolding, one sides of the two side plates 3 are respectively attached to the first side bars 12, and the other sides of the two side plates 3 are respectively attached to the second side bars 22. The first plate 1, the second plate 2 and the two side plates 3 are assembled into a frame. The other sides of the two side plates 3 are respectively hinged with the second side bars 22. The two side plates 3 are respectively movably connected with a sliding member 4. The two sliding members 4 are respectively slidably disposed in the sliding guiding holes, so that the two side plates 3 respectively slide toward each other along the sliding guiding holes to realize folding or to slide away from each other along the sliding guiding holes to realize unfolding.

The foldable box in this embodiment can be folded, the structure is simple, the occupied space is reduced, the package volume is reduced, the storage, transportation and movement are convenient, and the folding state can also improve the impact resistance. Unfolding and assembling are carried out when needed. The unfolding and assembling method is: pulling the first plate 1 and/or the second plate 2 outward; during the process of moving the first plate 1 and/or the second plate 2 outward, the distance between the first plate 1 and the second plate 2 is increased, the two sliding members 4 respectively slide outward along the sliding guiding hole, and the two side plates 3 respectively rotate outward around a hinge with the second plate 2 to form a frame for unfolding. Since the heights of the first plate 1, the second plate 2 and the two side plates 3 are relatively fixed, the positioning time during assembly can be saved, and a large number of connectors are not required for assembly, which can effectively improve assembly efficiency and make the user complete box assembling in short time and can be used to improve the ease of assembly. The foldable box can also be folded again when not in use.

In this embodiment, a top end of the first plate body 11 is provided with a sliding positioning bar 13. In practical applications, a bottom end of the first plate body may be connected with a sliding positioning bar, or the top end and the bottom end of the first plate body may be respectively connected to a sliding positioning bar. In this embodiment, the sliding positioning bar is disposed on a side of the first plate adjacent to the second plate. In practical applications, the sliding positioning bar may also be disposed on a side of the first plate away from the second plate.

During folding, the two side plates 3 slide into the positioning space formed by the two first side bars 12, and the left and right movement positions of the first plate 1 are restricted by the two side plates 3, which simplifies the structure and is convenient for the user to use. During folding, the second side bars 22 at the two ends are respectively attached to the first side bars 12, and an accommodation spacing exists between the first plate 1 and the second plate body 21. The accommodation spacing can be used for placing other parts of the box, which is convenient for packaging the folded box after being folded. The other sides of the two side plates 3 are hinged to the second side bars 22 by hinges, respectively. The hinges are located inside the frame.

The two slides 4 each is provided with a fastening structure. Specifically, the fastening structure refers to a thread disposed on the sliding member 4. The side plate 3 is provided with a threaded portion, or the side plate 3 includes a side plate body and a sliding piece connected to the side plate body. The sliding piece is provided with a threaded portion. One end of the sliding member 4 is threaded to the threaded portion, and the other end of the sliding member 4 passes through the sliding guiding hole to be abutted against the first plate 1 to realize fixing between the side plate 3 and the first plate 1, which can further improve the ease of assembly and disassembly and realize stable fixing of the first plate 1 and the side plate 3. The fixed structure between the side plate 3 and the first plate 1 can also make the first plate 1, the second plate 2 and the two side plates 3 form a fixed frame without installing or not yet installing a bottom plate, a top plate, a laminate and a longitudinal partition. On the one hand, the positioning and assembly are facilitated, and the mechanical strength of the foldable box is improved. On the other hand, any one or two or more of a bottom plate, a top plate, a laminate and a longitudinal partition can be flexibly selected according to actual needs, even if the bottom plate, the top plate, the laminate and the longitudinal partition are not installed at all, the frame-type box can be formed to meet various user needs.

The wall of the sliding guiding hole is provided with a limiting protrusion protruding inward to realize the position limitation of the sliding member 4. The limiting protrusion can restrict the movement of the sliding member 4, further improving the convenience of assembly and the safety of use.

In this embodiment, the first plate is a rear plate located at the rear, and the second plate 2 is a front plate located at the front. The front plate can be opened with a window for taking and placing articles, and a door can be installed on the window. The designer can also flexibly add one or two or more of a bottom plate, a top plate, a laminate and a longitudinal partition to make the foldable box more suitable for the user.

Embodiment 2

The structure of the foldable box in this embodiment is as shown in FIG. 4 to FIG. 6. The difference from embodiment 1 is that: in this embodiment, the top end and the bottom end of the first plate body 11 are respectively connected with a sliding positioning bar 13. Two sliding guiding holes are defined in the sliding positioning bar 13 along a length direction of the first plate. The side plate 3 includes a side plate body and a sliding piece 31 connected to the side plate body. The sliding piece 31 is provided with a threaded portion. One end of the sliding member 4 is threaded to the threaded portion, and the other end of the sliding member 4 passes through the sliding guiding hole to be abutted against the first plate 1 to realize fixing between the side plate 3 and the first plate 1. The rest of the structure of this embodiment is the same as that of embodiment 1.

Embodiment 3

The difference between the foldable box in this embodiment from embodiment 1 is that: in this embodiment, the sliding positioning structure includes at least two sliding positioning bars disposed on the upper and lower sides and parallel to each other; the sliding guiding holes refer to sliding guiding holes opened on the respective sliding positioning bars and parallel to each other; one end of the sliding member is connected to the side plate, and the other end of the sliding member sequentially passes through all the sliding guiding holes to realize that the sliding member is slidably disposed in the sliding guiding hole. The sliding member simultaneously passing through all the sliding guiding holes can keep the sliding member in a vertical state, which facilitates smooth sliding of the sliding member. It also facilitates the fixing between the side plate and the first plate, and further improves the mechanical strength of the foldable box. The rest of the structure of this embodiment is the same as that of embodiment 1.

Embodiment 4

The assembling and disassembling method for a new foldable box in this embodiment comprises an assembling method and a disassembling method. The assembling method comprises the following steps:

in step A1, laying the box in a folded state flat; pulling one of the first plate and the second plate upward, the other member keeping stationary under the action of gravity, and the two side plates respectively rotating outward around a hinge with the second plate to accommodate the increasing distance between the first plate and the second plate until both side plates are unfolded and form a frame together with the first plate and the second plate; during the external rotation of the two side plates, the two sliding members respectively connected to the two side plates sliding away from each other along the sliding guiding portion opened on the first plate to limit the rotation angle of the two side plates and realize the positioning of the first plate;

in step A2, fixing the frame and completing assembly;

the disassembling method includes the following steps:

in step B1, de-fixing the frame;

in step B2, the two side plates respectively rotating inwardly around the hinge with the second plate until the two side plates are overlapped with the first plate; in the process of the two side plates rotating inwardly respectively, the two sliding members respectively sliding toward each other along the sliding guiding portion, and the first plate and/or the second plate moving inwardly to reduce the distance between the first plate and the second plate.

The assembling and disassembling method in the present invention is simple in operation, and a worker can perform assembly or disassembly quickly by a single operation, which can save human resources and improve assembly and disassembly efficiency.

Preferably, in the step A2, fixing the frame means adopting one of the following three ways:

a. realizing positioning and fixing between the two side plates and the first plate by two sliding members respectively, so that the frame is fixed;

b. mounting one or more of a top plate, a bottom plate, a laminate and a longitudinal partition on the frame, so that the distance between the first plate and the second plate and the distance between the two side plates are fixed, thereby fixing the frame; and

c. realizing positioning and fixing between the two side plates and the first plate by two sliding members respectively, so that the frame is fixed, and mounting any one or two or more of a top plate, a bottom plate, a laminate plate and a longitudinal partition on the frame to strengthen the frame.

All the above three ways can effectively achieve frame fixing; the first method can meet the user's needs for the use of the frame-type box, simplify the structure, and at the same time ensure the good mechanical strength of the foldable box. The third method can flexibly select one or two or more of a bottom plate, a top plate, a laminate and a longitudinal partition to meet various user needs; and after fixing the frame, the installation of the top plate, the bottom plate, the laminate and the longitudinal partition helps to reduce the assembly difficulty and improve the product quality.

Embodiment 5

The high-strength foldable box of this embodiment has a structure as shown in FIG. 7 to FIG. 15, and includes a first plate 1, a second plate 2, two side plates 3, and a sliding positioning bar 13. The first plate 1 includes a first plate body 11, an upper side bar 14 connected to an upper end of the first plate body 11, a lower side bar 15 connected to a lower end of the first plate body 11, and side bars 14 connected to left and right ends of the first plate body 11. The second plate 2 includes a second plate body 21 and positioning side bars 22 connected to left and right ends of the second plate body 21. The positioning side bars 22 at the two ends are respectively located on a side of the second plate body 21 adjacent to the first plate 1.

The slide positioning bar 13 is disposed below the upper side bar 14 and above the lower side bar 15. In order to improve the mechanical strength of the sliding positioning bar and facilitate the installation of the sliding positioning bar, the sliding positioning bar 13 adopts a reverse sliding positioning bar, including a guiding portion 131, a first mounting portion 132 and a second mounting portion 133. The first mounting portion 132 and the second mounting portion 133 are reversely connected to two sides of the guiding portion 131. The guiding portion 131 is provided with a sliding guiding hole 134 along a length direction.

The two side plates 3 are respectively hinged to the second plate 2. The two side plates 3 are respectively fixedly connected or movably connected with the sliding member 4. The two sliding members 4 are slidably disposed in the sliding guiding holes 134, respectively, so that the two side plates 3 respectively slide toward each other along the sliding guiding holes 134 to realize folding or slide away from each other along the sliding guiding holes 134 to realize unfolding.

The sliding positioning bar 13 being disposed below the upper side bar 14 refers to that the guiding portion 131 is located below the upper side bar 14, and a gap exists between the guiding portion 131 and the upper side bar 14 to accommodate the outwardly protruding portion of the sliding member. The second mounting portion 133 is connected to the first plate body 11. The first mounting portion 132 is connected to the upper side bar 14. Specifically, one side of the upper side bar 14 away from the first plate body 11 is connected to an upper connecting edge. The upper connecting edge is connected to the first mounting portion 132 by a first connector.

The sliding positioning bar 13 being disposed above the lower side bar 15 refers to that the guiding portion 131 is located above the lower side bar 15 and a gap exists between the guiding portion 131 and the lower side bar 15 to accommodate the outwardly protruding portion of the sliding member. The second mounting portion 133 is connected to the first plate body 11. The first mounting portion 132 is connected to the lower side bar 15. Specifically, one side of the lower side bar 15 away from the first plate body 11 is connected to a lower connecting edge. The lower connecting edge is connected to the first mounting portion 132 by a second connector 2.

In practical applications, the sliding positioning bar may also adopt a flat sliding positioning bar or a U-shaped sliding positioning bar. The U-shaped sliding positioning bar includes a guiding portion, a first mounting portion and a second mounting portion. The first mounting portion and the second mounting portion are connected at two sides of the guiding portion in the same direction.

In the box of the present invention, the upper side bar 14 and the lower side bar 15 can cover the sliding positioning bar 13 to prevent dust from entering the inside of the box from the sliding guiding hole 134, and have good dustproof effect. The upper side bar 14 and the lower side bar 15 block the sliding member 4 and the sliding guiding hole 134 to make the outer surface of the box flat, making it convenient to place an article on the top, and avoiding the sliding member 4 protruding outward to scratch the ground or damage other items, so that the box is flat and beautiful. The sliding positioning bar 13 can strengthen the mechanical strength of the first plate 1, which increases the overall mechanical strength of the box and is beneficial to improve the bearing capacity of the box. The box of the present invention can be folded, has a simple structure, takes up small space, can reduce the packaging volume, is convenient for storage, transportation and movement, and can also improve the anti-impact ability. The assembly and disassembly and folding operation is convenient, and the folding is convenient when not in use.

The sliding positioning bar and the first plate are separately arranged, and the fixed connection is achieved by welding or riveting or screwing.

The two sliding members 4 are respectively provided with a fastening structure for fixing between the side plates 3 and the first plate 1. In the case that a bottom plate, a top plate, a laminate and a vertical partition are not installed or not yet installed, the first plate 1, the second plate 2 and the two side plates 3 can also be formed into a fixed frame. On the one hand, it is easy for positioning and assembling, improving the mechanical strength of the foldable box. On the other hand, one or two or more of the bottom plate, the top plate, the laminate and the vertical partition can be flexibly selected according to actual needs, or a frame type box can be formed even not installing the bottom plate, the top plate, the laminate and the vertical partition to meet various user needs.

The fastening structure is a screw provided on the sliding member 4. The sliding member 4 is a bolt. The side plate 3 includes a side plate body 3 and a sliding piece 31 connected to the side plate body 3. The sliding piece 31 is provided with a screwing portion. The bolt is screwed with the screwing portion through the sliding guiding hole 134 for fixing between the side plate 3 and the first plate 1. The advantage of this design is that the ease of disassembly and assembly can be further improved, and the first plate 1 and the side plate 3 can be stably fixed. In this embodiment, the side plate includes a sliding piece 31. The sliding piece 31 is provided with a screwing portion. In practical applications, the side plate may not be provided with a sliding piece, but may be directly provided with a screwing portion.

On the upper side bar 14 and the lower side bar 15, mounting operation mouths are opened at positions opposite to the two ends of the sliding guiding hole 134. When the sliding member 4 is a connector such as a screw or a bolt, the mounting operation mouth allows a user to directly view the sliding member 4 and facilitate the locking or loosening of the sliding member 4.

A wall of the sliding guiding hole 134 is provided with a limiting protrusion 135 protruding inwardly to realize the position limitation of the sliding member 4. The limiting protrusion 135 can restrict the movement of the sliding member 4, further improving the convenience of assembly and the safety of use.

One sides of the two side plates 3 are respectively attached to the first plate 1, and the other sides of the two side plates 3 are respectively attached to the second plate 2 so that the first plate 1, the second plate 2 and the two sides plates 3 are assembled into a frame. When unfolding, the side plate 3 is respectively attached to the first plate 1 and the second plate 2, which prevents dust from entering the box from the gap, and can also improve the mechanical strength of the box. When the foldable box is folded, an accommodating spacing exists between the first plate body 11 and the second plate body 21, and the positioning bars 22 at the two ends are respectively attached to the side bars 14 at the two ends. The accommodating spacing can be used to place other parts of the box, as shown in FIG. 15, to facilitate packaging after the box is folded.

The two side plates 3 each include a side plate body 32 and a reinforcing edge 33. The reinforcing edge 33 has an L-shaped cross section. The reinforcing edge 33 is disposed on a side of the side plate body 32 adjacent to the side bar 14, and attached to the side bar 14. The reinforcing edge 33 is L-shaped, which can strengthen the mechanical strength of the side plate, and can also limit the first plate and vice versa when the box is unfolded, thereby preventing the side plate from being deformed outward.

Embodiment 6

The difference between the high-strength foldable box in this embodiment and the fifth embodiment is that in the fifth embodiment, a sliding positioning bar is respectively disposed below the upper side bar and above the lower side bar, but in this embodiment, a sliding positioning bar is merely disposed below the upper side bar, or a sliding positioning bar is merely disposed above the lower side bar. The rest of the structure of this embodiment is the same as that of the fifth embodiment.

Embodiment 7

The difference between the high-strength foldable box in this embodiment and the fifth embodiment is that, in this embodiment, the sliding positioning bar is connected to one side of the first plate adjacent to the second plate. The sliding positioning bar adopts a U-shaped sliding positioning bar, and the sliding guiding hole is perpendicular to the first plate body. The rest of the structure of this embodiment is the same as that of the fifth embodiment.

Embodiment 8

The difference between the high-strength foldable box in this embodiment and the fifth embodiment is that in this embodiment, the sliding positioning bar is integrally formed with the first plate. The rest of the structure of this embodiment is the same as that of the fifth embodiment.

Embodiment 9

The difference between the high-strength foldable box in this embodiment and the fifth embodiment is that: in this embodiment, the two sliding members do not have a fastening structure, and the fixation between the side plate and the first plate is realized by any one or two or more of a bottom plate, a top plate, a laminate and a vertical partition. The rest of the structure of this embodiment is the same as that of the fifth embodiment.

The above-described embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above-described embodiments, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention should be equivalent replacements and are included in the scope of the present invention. 

I claim:
 1. A new foldable box, comprising: a first plate, a second plate and two side plates; wherein the two side plates are respectively hinged to the second plate; the first plate is provided with a sliding guiding portion along a length direction of the first plate; the two side plates are respectively fixedly connected or movably connected with a sliding member; the two sliding members are respectively slidably connected with the sliding guiding portion, so that the two side plates respectively slide toward each other along the sliding guiding portion to realize folding or slide away from each other along the sliding guiding portion to realize unfolding.
 2. The new foldable box according to claim 1, wherein the first plate is provided with a sliding guiding portion along a length direction of the first plate in one of the following two ways: a) in a first way, the first plate comprises a first plate body, a sliding positioning structure connected to a top end and/or a bottom end of the first plate body, and side bars connected at two ends of the first plate body; the sliding guiding portion refers to a sliding guiding hole opened on the sliding positioning structure and extending along the length direction of the first plate; the two sliding members are respectively slidably disposed in the sliding guiding hole; the side bars at the two ends are located on one side of the first plate body adjacent to the second plate to form a positioning space, so that during folding, the two side plates are simultaneously accommodated in the positioning space to position the first plate; b) in a second way, the first plate comprises a first plate body, an upper side bar connected to a top end of the first plate body, a lower side bar connected to a bottom end of the first plate body and first side bars connected at left and right ends of the first plate body; the sliding guiding portion refers to a sliding positioning bar; the sliding positioning bar is connected one or more of below the upper side bar, above the lower side bar, and at one side of the first plate body adjacent to the second plate; the sliding positioning bar is opened with a sliding guiding hole along a length direction; the two side plates are respectively hingedly connected with the second plate; the two side plates are respectively fixedly connected or movably connected with a sliding member; the two sliding members are respectively slidably disposed in the sliding guiding holes, so that two side plates respectively slide toward each other along the sliding guiding holes to realize folding or slide away from each other along the sliding guiding holes to realize unfolding.
 3. The new foldable box according to claim 2, wherein in the second way, the slide positioning bar refers to a flat sliding positioning bar or a U-shaped sliding positioning bar or a reverse sliding positioning bar.
 4. The new foldable box according to claim 2, wherein in the second way, mounting operation mouths are provided on the upper side bar and/or the lower side bar at positions opposite to two ends of the sliding guiding hole.
 5. The new foldable box according to claim 2, wherein in the second way, the sliding positioning bar and the first plate are separately disposed, and the fixed connection is achieved by welding or riveting or screwing, or the sliding positioning bar is integrally formed with the first plate.
 6. The new foldable box according to claim 2, wherein the two sliding members are respectively provided with a fastening structure for fixing between the side plates and the first plate.
 7. The new foldable box according to claim 6, wherein the fastening structure refers to a thread provided on the sliding member; the side first plates provided with a threaded portion, or the side plate comprises a side plate body and a sliding piece connected to the side plate body, and the sliding piece is provided with a threaded portion; one end of the sliding member is threaded to the threaded portion, and the other end of the sliding member passes through the sliding guiding hole to abut the first plate to realize fixing between the side plate and the first plate.
 8. The new foldable box according to claim 2, wherein the sliding positioning structure is configured in one of two ways: a) each sliding positioning structure includes a sliding positioning bar; the sliding guiding hole refers to a sliding guiding hole opened on the sliding positioning bar; one end of the sliding member is connected with the side plate, and the other end of the sliding member passes through the sliding guiding hole to realize that the sliding member is slidably disposed in the sliding guiding hole; and b) the sliding positioning structure comprises at least two sliding positioning bars arranged on the upper and lower sides and parallel to each other; the sliding guiding holes refer to sliding guiding holes opened on the respective sliding positioning bars and parallel to each other; one end of the sliding member is connected to the side plate, and the other end of the sliding member sequentially passes through all the sliding guiding holes to realize that the sliding member is slidably disposed in the sliding guiding hole.
 9. The new foldable box according to claim 2, wherein the sliding guiding hole is provided with an inwardly protruding limiting protrusion on a hall wall to realize the position limiting of the sliding member.
 10. The new foldable box according to any claim 2, wherein one sides of the two side plates are respectively attached to the first plate, and the other sides of the two side plates are respectively attached to the second plate to realize the assembly of the first plate, the second plate and the two side plates into a frame.
 11. The new foldable box according to claim 10, wherein one sides of the two side plates being respectively attached to the first plate refers to that the two side plates each comprises a side plate body and a reinforcing edge, the reinforcing edge has an L-shaped cross section; and the reinforcing edge is disposed on a side of the side plate body adjacent to the side bar, and is attached to the side bar.
 12. The new foldable box according to claim 10, wherein the second plate comprises a second plate body and second side bars connected to the two ends of the second plate body; the second side bars at the two ends are located on one side of the second plate body adjacent to the first plate, so that the second side bars at the two ends are respectively attached to the first plate, and a spacing exists between the first plate and the second plate body; the other sides of the two side plates are respectively attached to the second plate, and the other sides of the two side plates are respectively attached to the side bars at the two ends.
 13. A method for assembling and disassembling a new foldable box, comprising: an assembling method and a disassembling method; wherein the assembling method comprises the following steps: in step A1, laying the box in a folded state flat; pulling one of a first plate and a second plate upward, the other keeping stationary under the action of gravity, and the two side plates respectively rotating outward around a hinge with the second plate to accommodate the increasing distance between the first plate and the second plate until both side plates are unfolded and form a frame together with the first plate and the second plate; during the outward rotation of the two side plates, two sliding members respectively connected to the two side plates sliding away from each other along a sliding guiding portion opened on the first plate to limit rotation angles of the two side plates and realize the positioning of the first plate; in step A2, fixing the frame and completing assembly; the disassembling method includes the following steps: in step B1, de-fixing the frame; in step B2, the two side plates respectively rotating inwardly around the hinge with the second plate until the two side plates are both overlapped with the first plate; in the process of the two side plates rotating inwardly respectively, the two sliding members respectively sliding toward each other along the sliding guiding portion, and the first plate and/or the second plate moving inwardly to reduce the distance between the first plate and the second plate.
 14. The assembling and disassembling method according to claim 13, wherein in the step A2, fixing the frame means adopting one of the following three ways: a) realizing positioning and fixing between the two side plates and the first plate by two sliding members respectively, so that the frame is fixed; b) mounting one or more of a top plate, a bottom plate, a laminate and a longitudinal partition on the frame, so that the distance between the first plate and the second plate and the distance between the two side plates are fixed, thereby fixing the frame; and c) realizing positioning and fixing between the two side plates and the first plate by two sliding members respectively, so that the frame is fixed, and mounting any one or two or more of a top plate, a bottom plate, a laminate plate and a longitudinal partition on the frame to strengthen the frame. 